What's on the other side of the door? There's only one way to find out: You'll have to go through it.

JiHyeon Lee's debut book, Pool, was lauded as a wordless masterpiece. Here she takes readers on another journey into an unexpected world. Delicate drawings transform from grays to vivid color as a curious child goes through a mysterious door and discovers that open-mindedness is the key to adventure and friendship.

A New York Times Editors' Choice Book!

"This remarkable wordless picture book bursts with buoyant energy as a boy finds the key to a long-unopened door and makes his way from drabness to a joyful, magical land." —The New York Times Book Review